apic: convert ->busdev.qdev casts to C casts

Use C casts to avoid accessing ICCDevice's qdev field
directly.

Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/intc/apic.c

diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index 0f97b47..77b639c 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -370,13 +370,14 @@
 static void apic_update_irq(APICCommonState *s)
 {
     CPUState *cpu;
+    DeviceState *dev = (DeviceState *)s;
 
     cpu = CPU(s->cpu);
     if (!qemu_cpu_is_self(cpu)) {
         cpu_interrupt(cpu, CPU_INTERRUPT_POLL);
     } else if (apic_irq_pending(s) > 0) {
         cpu_interrupt(cpu, CPU_INTERRUPT_HARD);
-    } else if (!apic_accept_pic_intr(&s->busdev.qdev) || !pic_get_output(isa_pic)) {
+    } else if (!apic_accept_pic_intr(dev) || !pic_get_output(isa_pic)) {
         cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD);
     }
 }
@@ -549,10 +550,12 @@
 
 static bool apic_check_pic(APICCommonState *s)
 {
-    if (!apic_accept_pic_intr(&s->busdev.qdev) || !pic_get_output(isa_pic)) {
+    DeviceState *dev = (DeviceState *)s;
+
+    if (!apic_accept_pic_intr(dev) || !pic_get_output(isa_pic)) {
         return false;
     }
-    apic_deliver_pic_intr(&s->busdev.qdev, 1);
+    apic_deliver_pic_intr(dev, 1);
     return true;
 }